SQL query to get the data as per the input - sql

Question

Let’s say I am passing the input as input=2021-01-21,CGT for an sql query. CGT will be the common keyword in the database but the dates keep changing. I want the records which contain CGT and all the other dates except the date mentioned in the input parameter.
Don’t answer it as retrieve all the records that contain CGT and filter it out in Excel as the records for the particular date is huge in number. So I want the other dates which are less in count which can be handled.
Example query :-
select records from tablename where var_name=‘input’;

Answer 1

Based on your question, I assume that this is what you want.
Given:
| input |
---------------
2021-01-21,CGT
2021-01-22,CGT
2021-01-23,CGT
2021-01-25,CGT
2021-01-26,CGT
2021-01-27,CGT
2021-01-28,CGT
If you specify '2021-01-23' you expect to get:
| input |
---------------
2021-01-21,CGT
2021-01-22,CGT
2021-01-25,CGT
2021-01-26,CGT
2021-01-27,CGT
2021-01-28,CGT
You did not specify the database you are using. However, the concept should be similar regardless of the database platform.
SELECT *
FROM sample
WHERE SUBSTRING_INDEX(input,',',1) <> '2021-01-22'
[MySQL]
In [DB2], Given that you wish to pass in the input string and extract
the date, do the following:
SELECT *
FROM sample
WHERE SUBSTRING(input,1, (LOCATE(',',input) - 1)) <> '2021-01-22'